TaxNo: 3038Genus Nematocyclus
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Pericyclidae
|
| Subfamily: |
Pericyclinae
|
| Genus: | Nematocyclus |
| Qualifier: | gy |
| Author: |
Gordon 1986,p.28
|
| Valid: | Goniocyclus Gordon 1986 |
| Lower Boundary: |
UNM Caballero Fm. base, 357.5 million years
|
| Upper Boundary: |
UNM Caballero Fm. top, 353 million years
|